* added highly experimental support for on-the-fly instrument editing
within the sampler's process (by using instrument editor plugins),
you'll notice the new "Registered instrument editors:" message on
startup, the plugin path can be overridden at compile time with
./configure --enable-plugin-dir=/some/dir
* added a new LSCP command "EDIT INSTRUMENT <sampler-channel>" to spawn
a matching instrument editor for the instrument on the given sampler
channel (LSCP command syntax might be subject to change soon)
* config.h is not going to be installed along with liblinuxsampler's
API header files anymore (not necessary anymore)
* take care of $(DESTDIR) when creating the instruments DB on 'make
install' rule (needed for packaging and cross compilation)
* bumped version to 0.4.0.5cvs